PDF malware analysis — malicious · c81df13703447d60

MALICIOUS

PDF

65.3 KB Created: 2020-12-15 01:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: aba103beab16fdac0ce7df3bd05d9d89 SHA-1: 82c48b1c889b875778c69c0c926a4c4eac7a1c73 SHA-256: c81df13703447d60d2072c25582330538e1da8a8269a97b88fb33822d7ed502a

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector URL, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious URL suggests the document is designed to lure users to a compromised site.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://traffmen.ru/123?utm_term=garage+floor+sealer+paint In PDF document text
- https://cdn-cms.f-static.net/uploads/4453102/normal_5fb4f4beba807.pdfIn PDF document text
- https://vimexizud.weebly.com/uploads/1/3/4/7/134755563/jibazofub.pdfIn PDF document text
- https://rugazodexozapef.weebly.com/uploads/1/3/4/4/134480570/tinomugudaredoroji.pdfIn PDF document text
- https://zasawebisev.weebly.com/uploads/1/3/4/8/134865024/xitoniwerozelizazuzo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4493917/normal_5fb61973a7706.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454438/normal_5fbd837a27368.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403120/normal_5fc47c0d84d04.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383136/normal_5f8d634d97f17.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421612/normal_5fd2225615440.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/67d7f2b5-d3b3-4a2a-a599-6cc599ac1ac0/14975113109.pdfIn PDF document text
- https://s3.amazonaws.com/wutogugej/lexivagevev.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c451.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC451	5100 bytes
SHA-256: `f4abc0ebbda2c8cc820950d8cd16524a254ef27302ce1687c3f78b787655264a`
`font_01_sfnt_off0000d5c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD5C2	10104 bytes
SHA-256: `c69eef45ac38fc67b2b7092ec155d9b940ba2e2044da1d3fb2db660a11e33748`

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